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(Model) G. E. BARTLETT.

PISTON ROD PACKING.

No. 245,930. Patented Aug. 23,1881.

Aites i I Inventor:

M 42% 11 wmhfiflm UNITED STATES PATENT OFFICE.

CHARLES E. BARTLETT, OF ST. LOUIS, MISSOURI.

PISTON-ROD PACKING.

SPECIFICATION forming part of Letters Patent No. 245,930, dated August 23, 1881. Application filed December 17,1880. (Model.)

To all whom itmay concern:

Be it known that I, CHARLES E. BARTLETT, of St. Louis, Missouri, have made a new and useful Improvementin Piston-Rod Packing, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, making'part of this specification, in whichv Figure 1 is a longitudinal section taken through a stuffing-box, and showing the improved packing in position; Fig. 2, an elevation of the packing, a portion of the outer wires being removed to exhibit the interior of the construction; and Fig. 3, a cross-section taken through the packing.

The same letters denote the same parts.

The distinguishing feature of the present improvement islead wire of uniform size twisted evenly around a core, preferably of a yielding nature-such as hem p, rubber, or cottonforming a rope, as seen in the drawings, where- A represents the core, and B a wrapping laid around the core, consisting of leaden wires b b b I), of uniform diameter, and twisted evenly, as shown, around the core. The wires are preferably, when the core is in the form of a cord or rope, laid in the opposite direction to the strands of the core.

The packing is applied in the ordinary way,

as seen in Fig. 1, where (3 represents the piston-rod, D the stuffing-box, and E the gland. As the latter is tightened against the packing the wires of the packing readily become compacted in the proper shape without having to be pressed against the rod so as to cramp the working thereof. The lead of the wires also I am aware that a packing has been made by winding a flat strip of soft metal about an elastic core, and do not claim a ring or packing so made.

I claim- A piston-rod or other packing consisting of 50' a yielding core and aseries of soft-wire strands of uniform diameter twisted evenly and spirally about said core, so as to entirely coverit, substantially as set forth and described.

CHARLES E. BARTLETT.

Witnesses:

O. D. MooDY, JAMES MAHONEY. 

